Study of vector modulation and sliding model control for high frequency link inverter based on De-Re-couple idea

Taking the high frequency link matrix style three-phase inverter as studying object, combining its topology and the work characteristic, this paper presented the de-re-couple analysis idea. The de-re-couple vector condition also has been induced. Aiming at its non-linear characteristic, this paper proposed a new control strategy called de-re-couple vector slide mode and summarized the design steps of output voltage sliding mode controller. The accuracy is confirmed by closed loop simulation and Loop-locked experiment. The accordant results of Matlab simulation and experiment of DSP+CPLD confirmed the feasibility of de-re-couple analysis idea and validity of sliding mode control. And it provides the beneficial information for the further research.